VIAHART Brain Flakes 500 Piece Interlocking Plastic Disc Set | A Creative and Educational Alternative to Building Blocks | Tested for Children's Safety | A Great STEM Toy for Both Boys and Girls! Every Jar Has More Than 500 (!) Pieces and Includes an Idea Booklet with Instructions to Build a Brain Flakes Ball! | Discs Click Together Easily For Ages 5+ (Some children as young as 3 years have no problem) | Discs measure 1.3 Inches (3.3cm) across Child Safe | Tested for compliance with ASTM F963-11 US CPSIA Regulations | Brain Flakes discs are BPA, lead, heavy metal, and phthalate free Both Boys and Girls Love Brain Flakes Disks! | Teaches Spatial Thinking | Engineers Start Here! Give Your Child The Skills Today! | Hours of Play and Tons of Awesome Creations! SIZE AND WEIGHT | Product Measures 5 x 5 x 8 in inches | 12.7 x 12.7 x 20.4 in centimeters | Product Weighs Approximately 1.9 lbs / 0.9 kgs | These dimensions and weight do not include the packaging | Watch our video to learn more about this product: youtube.com/watch?v=CHJojV43pzk 30 day no questions asked return policy and FREE returns!